Internal release agent, composition including internal release agent, and process for producing a plastic lens using same composition
US10239239B2 · kind B2 · utility
1Cited by
8References
10Claims
0Family size
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Key dates
| Filing date | Dec 25, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Dec 25, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An internal release agent includes at least one phosphodiester represented by the following general formula (1). In the formula, R1 and R2 independently represent a hydrocarbon group having 1 to 30 carbon atoms, which is optionally substituted with at least one hydroxyl group, and R3 represents an alkylene group having 2 to 4 carbon atoms. A plurality of R3's may be the same as or different from each other. M represents a hydrogen atom, an ammonium ion, an alkali metal ion, or a monovalent/divalent alkali earth metal ion, and n is an integer of 1 to 60.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.